<template>
  <v-chart :option="option" autoresize :loading="load" class="pack"/>
</template>

<script>
import {ref, defineComponent} from "vue";

export default defineComponent({
  name: "Base3DPieChart",
  data(){
    let load=false
    //环饼颜色设置
    const colorList = ['rgba(69, 244, 245,  0.9)', 'rgba(7, 166, 255,  0.9)', 'rgba(255, 208, 118,  0.9)', 'rgba(109, 148, 198, 0.9)', 'rgba(255, 255, 255,  0.9)']
    // 生成扇形的曲面参数方程，用于 series-surface.parametricEquation
    function getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, h) {
      // 计算
      let midRatio = (startRatio + endRatio) / 2;

      let startRadian = startRatio * Math.PI * 2;
      let endRadian = endRatio * Math.PI * 2;
      let midRadian = midRatio * Math.PI * 2;

      // 如果只有一个扇形，则不实现选中效果。
      // if (startRatio === 0 && endRatio === 1) {
      //     isSelected = false;
      // }
      isSelected = false;
      // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
      k = typeof k !== 'undefined' ? k : 1 / 3;

      // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
      let offsetX = isSelected ? Math.sin(midRadian) * 0.1 : 0;
      let offsetY = isSelected ? Math.cos(midRadian) * 0.1 : 0;

      // 计算高亮效果的放大比例（未高亮，则比例为 1）
      let hoverRate = isHovered ? 1.05 : 1;

      // 返回曲面参数方程
      return {
        u: {
          min: -Math.PI,
          max: Math.PI * 3,
          step: Math.PI / 32,
        },

        v: {
          min: 0,
          max: Math.PI * 2,
          step: Math.PI / 20,
        },

        x: function (u, v) {
          if (u < startRadian) {
            return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
          }
          if (u > endRadian) {
            return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
          }
          return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        y: function (u, v) {
          if (u < startRadian) {
            return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
          }
          if (u > endRadian) {
            return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
          }
          return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
        },

        z: function (u, v) {
          if (u < -Math.PI * 0.5) {
            return Math.sin(u);
          }
          if (u > Math.PI * 2.5) {
            return Math.sin(u) * h * 0.1;
          }
          return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
        },
      };
    }

// 生成模拟 3D 饼图的配置项
    function getPie3D(pieData, internalDiameterRatio) {
      let series = [];
      let sumValue = 0;
      let startValue = 0;
      let endValue = 0;
      let legendData = [];
      let k =
          typeof internalDiameterRatio !== 'undefined'
              ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
              : 1 / 3;

      // 为每一个饼图数据，生成一个 series-surface 配置
      for (let i = 0; i < pieData.length; i++) {
        sumValue += pieData[i].value;

        let seriesItem = {
          name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
          type: 'surface',
          parametric: true,
          wireframe: {
            show: false,
          },
          pieData: pieData[i],
          pieStatus: {
            selected: false,
            hovered: false,
            k: 1 / 10,
          },
        };

        if (typeof pieData[i].itemStyle != 'undefined') {
          let itemStyle = {};

          typeof pieData[i].itemStyle.color != 'undefined' ? (itemStyle.color = pieData[i].itemStyle.color) : null;
          typeof pieData[i].itemStyle.opacity != 'undefined'
              ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
              : null;

          seriesItem.itemStyle = itemStyle;
        }
        series.push(seriesItem);
      }

      // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
      // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
      for (let i = 0; i < series.length; i++) {
        endValue = startValue + series[i].pieData.value;

        series[i].pieData.startRatio = startValue / sumValue;
        series[i].pieData.endRatio = endValue / sumValue;
        series[i].parametricEquation = getParametricEquation(
            series[i].pieData.startRatio,
            series[i].pieData.endRatio,
            false,
            false,
            k,
            series[i].pieData.value
        );

        startValue = endValue;

        legendData.push(series[i].name);
      }

      // // 补充一个透明的圆环，用于支撑高亮功能的近似实现。
      series.push({
        name: 'mouseoutSeries',
        type: 'surface',
        parametric: true,
        wireframe: {
          show: false,
        },
        itemStyle: {
          opacity: 0.1,
          color: '#E1E8EC',
        },
        parametricEquation: {
          u: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
          },
          v: {
            min: 0,
            max: Math.PI,
            step: Math.PI / 20,
          },
          x: function (u, v) {
            return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
          },
          y: function (u, v) {
            return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
          },
          z: function (u, v) {
            return Math.cos(v) > 0 ? -0.5 : -5;
          },
        },
      });

      // // 补充一个透明的圆环，用于支撑高亮功能的近似实现。
      series.push({
        name: 'mouseoutSeries',
        type: 'surface',
        parametric: true,
        wireframe: {
          show: false,
        },
        itemStyle: {
          opacity: 0.1,
          color: 'rgba(101, 153, 164, 0.24)',
        },
        parametricEquation: {
          u: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
          },
          v: {
            min: 0,
            max: Math.PI,
            step: Math.PI / 20,
          },
          x: function (u, v) {
            return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
          },
          y: function (u, v) {
            return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
          },
          z: function (u, v) {
            return Math.cos(v) > 0 ? -5 : -7;
          },
        },
      });
      series.push({
        name: 'mouseoutSeries',
        type: 'surface',

        parametric: true,
        wireframe: {
          show: false,
        },
        itemStyle: {
          opacity: 0.1,
          color: '#E1E8EC',
        },
        parametricEquation: {
          u: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20,
          },
          v: {
            min: 0,
            max: Math.PI,
            step: Math.PI / 20,
          },
          x: function (u, v) {
            return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2.2;
          },
          y: function (u, v) {
            return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2.2;
          },
          z: function (u, v) {
            return Math.cos(v) > 0 ? -7 : -7;
          },
        },
      });

      // 准备待返回的配置项，把准备好的 legendData、series 传入。
      let option = {
        // animation: false,
        backgroundColor: '#163043',
        // animation: false,
        // backgroundColor: '#163043',
        fontFamily: 'Source Han Sans CN',
        tooltip: {
          backgroundColor: 'rgba(13, 64, 71, 0.50)',
          borderColor: 'rgba(143, 225, 252, 0.60)',
          padding: 8,
          textStyle: {
            color: '#fff',
          }
        },
        //文字设置
        legend: {
          icon: 'none',
          orient: 'vertical',
          data: pieData.map((dItem,dIndex) => {
            return {
              ...dItem,
              textStyle: {
                rich: {
                  iconName: {
                    width: 4,
                    height: 16,
                    borderRadius: 5,
                    backgroundColor: colorList[dIndex],
                  },
                  percent: {
                    color: colorList[dIndex],
                  },
                }
              },

            }
          }),
          right: '5%',
          bottom: '3rem',
          itemGap: 30,
          itemWidth: 12,
          itemHeight: 12,
          selectedMode: true, // 关闭图例选择
          textStyle: {
            color: '#fff',
            fontSize: 16,
            fontFamily: 'Source Han Sans CN',
            rich: {
              // iconName: {
              //   width: 5,
              //   height: 8,
              //   backgroundColor: '#ff00ff'
              // },
              name: {
                color: '#FFF',
                fontSize: 12,
                width: 140,
                padding: [0, 0, 0, 10],
              },
              value: {
                color: '#2BDFD4',
                fontFamily: 'PangMenZhengDao',
                fontSize: 12,
                width: 80,
                padding: [0, 0, 0, 30]
              },
              percent: {
                color: '#2BDFD4',
                fontFamily: 'PangMenZhengDao',
                fontSize: 12,
                padding: [0, 0, 0, 30]
              },
              unit: {
                color: '#ACDCE4',
                fontSize: 16,
                padding: [0, 0, 0, 5]
              }
            }
          },
          formatter: name => {
            let obj = pieData.find(item => item.name === name);
            let datas = pieData;
            let total = 0;
            let target = obj.value
            for (let i = 0; i < datas.length; i++) {
              total += Number(datas[i].value);
            }
            const arr = [
              `{iconName|}{name|${name}}{value|${obj.value}}{percent|${((target / total) * 100).toFixed(0)}}{unit|%}`
            ];
            return arr.join('')
          }
        },
        xAxis3D: {},
        yAxis3D: {},
        zAxis3D: {},
        grid3D: {
          viewControl: {
            autoRotate: true, // 自动旋转
          },
          width: '100%',
          show: false,
          boxHeight: 60,
        },
        series: series,
      };
      return option;
    }
    const data = [
          {
            name: '杆塔',
            value: 134,
          },
          {
            name: '变电站',
            value: 56,

          },
          {
            name: '电缆',
            value: 57,
          },
          {
            name: '损伤程度',
            value: 11,
          },
          {
            name: '损伤类型',
            value: 51,
          },
        ]
    const serData = data.map((dItem, index) => {
      return {
        ...dItem,
        value: Number(dItem.value),
        itemStyle: {
          color: colorList[index]
        },
      }
    })
    return{
      load: ref(load),
      option: ref(getPie3D(serData,0.7))
    }
  }
})
</script>

<style scoped>

</style>